WebOct 30, 2024 · Abstract. Gob-area roof rupture movement is a key disturbance factor for gob-side entry retaining. The characteristics of gob-area sequential roof collapse of … http://yuxiqbs.cqvip.com/Qikan/Article/Detail?id=7103526305
An Innovative Approach for Gob-Side Entry Retaining in Thick ... - MDPI
WebAug 23, 2024 · Structural mechanics model diagram of gob-side entry retaining without filling. (A) Stress and load bearing model diagram, (B) stability control model diagram. … WebAug 30, 2024 · The coal wall, gob-side backfill, and gangues in goaf, constitute the support system for Gob-side entry retaining (GER) in coal mines. Reasonably allocating and … free vpns download
Distribution Law of Mining Stress of the Gob-Side Entry …
WebAug 6, 2024 · Gob-side entry retention by roof cutting changes the structure of the roadway roof and goaf roof by directional energy-accumulating blasting, and it realizes goaf-side roadway protection and pillar-free mining by utilizing the collapse and swelling of … WebIn the gob-side entry retaining technology of roof cutting and pressure relief, one side of the roadway is solid coal, and the other side is the rock block caving area in the goaf. The key block B structure will be formed in the rock section of the retained roadway roof. WebNov 6, 2024 · Gob-side entry retaining (GER) is a popular non-pillar mining technique regarding how to reserve a gateroad for the use of next panel mining. When used in thick coal seams, the conventional entry retaining method requires a huge amount of filling materials and may cause entry (gateroad) accidents. fashion bloggers in mumbai